The Colusa County Courthouse, in Colusa, California

Colusa, California

Colusa is the county seat of Colusa County, California. The population was 5,971 at the 2010 census, up from 5,402 at the 2000 census.-Geography:...

 was erected in 1861. This Federal/Classic Revival style building is the oldest remaining courthouse in the Sacramento Valley

Sacramento Valley

The Sacramento Valley is the portion of the California Central Valley that lies to the north of the San Joaquin-Sacramento Delta in the U.S. state of California. It encompasses all or parts of ten counties.-Geography:...

. The "Southern" style reflects the county's heritage and states' rights sympathies during the American Civil War

American Civil War

The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

, largely due to the influence of the local newspaper editor Will S. Green

Will S. Green

William Semple Green was a California pioneer, a steamboat captain, mail carrier, surveyor, newspaper publisher, writer, legislator, United States Surveyor General for California, California State Treasurer, and irrigationist.-Private life:He came to California during the California gold rush,...

. In its early years, the courthouse also served as a center for cultural, social, and religious activities. The courthouse is California Historical Landmark

California Historical Landmark

California Historical Landmarks are buildings, structures, sites, or places in the state of California that have been determined to have statewide historical significance by meeting at least one of the criteria listed below:...

#890.